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The Levenberg-Marquardt (LM) optimization algorithm has been widely used for solving machine learning problems. Literature reviews have shown that the LM can be very powerful and effective on moderate function approximation problems when…

机器学习 · 计算机科学 2021-11-12 Wenyi Wang , John Taylor , Biswajit Bala

Traditional MCMC algorithms are computationally intensive and do not scale well to large data. In particular, the Metropolis-Hastings (MH) algorithm requires passing over the entire dataset to evaluate the likelihood ratio in each…

机器学习 · 统计学 2019-08-29 Tung-Yu Wu , Y. X. Rachel Wang , Wing H. Wong

Individual events at high-energy colliders like the LHC can be represented by a sequence of measurements, or 'point patterns' in an observable space. Starting from this data representation, we build a simple Bayesian probabilistic model for…

高能物理 - 唯象学 · 物理学 2020-12-17 Darius A. Faroughy

Distributed algorithms, particularly Diffusion Least Mean Square, are widely favored for their reliability, robustness, and fast convergence in various industries. However, limited observability of the target can compromise the integrity of…

信号处理 · 电气工程与系统科学 2023-10-18 Mahdi Shamsi , Farokh Marvasti

Multiple-input multiple-output (MIMO) systems are playing an important role in the recent wireless communication. The complexity of the different systems models challenge different researches to get a good complexity to performance balance.…

信息论 · 计算机科学 2016-07-13 Nizar Ouni , Ridha Bouallegue

Given a dataset an outlier can be defined as an observation that it is unlikely to follow the statistical properties of the majority of the data. Computation of the location estimate of is fundamental in data analysis, and it is well known…

统计理论 · 数学 2015-11-16 G. Zioutas , C. Chatzinakos , T. D. Nguyen , L. Pitsoulis

This work concerns the analysis and design of distributed first-order optimization algorithms over time-varying graphs. The goal of such algorithms is to optimize a global function that is the average of local functions using only local…

最优化与控制 · 数学 2020-02-17 Akhil Sundararajan , Bryan Van Scoy , Laurent Lessard

Mixtures of Linear Regressions (MLR) is an important mixture model with many applications. In this model, each observation is generated from one of the several unknown linear regression components, where the identity of the generated…

机器学习 · 计算机科学 2020-03-31 Yuanzhi Li , Yingyu Liang

Temporal Difference learning or TD($\lambda$) is a fundamental algorithm in the field of reinforcement learning. However, setting TD's $\lambda$ parameter, which controls the timescale of TD updates, is generally left up to the…

机器学习 · 计算机科学 2017-01-02 Timothy A. Mann , Hugo Penedones , Shie Mannor , Todd Hester

Quadratic form reduction and lattice reduction are fundamental tools in computational number theory and in computer science, especially in cryptography. The celebrated Lenstra-Lenstra-Lov\'asz reduction algorithm (so-called LLL) has been…

数据结构与算法 · 计算机科学 2019-05-29 Thomas Espitau , Antoine Joux

It is known that the Thresholded Lasso (TL), SCAD or MCP correct intrinsic estimation bias of the Lasso. In this paper we propose an alternative method of improving the Lasso for predictive models with general convex loss functions which…

The LMS algorithm is one of the most widely used techniques in adaptive filtering. Accurate modeling of the algorithm in various circumstances is paramount to achieving an efficient adaptive Wiener filter design process. In the recent…

信号处理 · 电气工程与系统科学 2020-10-22 Enrique T. R. Pinto , Leonardo S. Resende

This contribution describes the experience with the application of different Machine Learning (ML) techniques to a physics analysis case. The use case chosen is the classification of top-antitop events coming from BSM or from SM using data…

数据分析、统计与概率 · 物理学 2020-06-04 Samuel Campo Martínez , José Salt , Santiago González de la Hoz , Miguel Villaplana

A novel IV estimation method, that we term Locally Trimmed LS (LTLS), is developed which yields estimators with (mixed) Gaussian limit distributions in situations where the data may be weakly or strongly persistent. In particular, we allow…

计量经济学 · 经济学 2020-06-24 Zhishui Hu , Ioannis Kasparis , Qiying Wang

A recent theorem of Bissacot, et al. proved using results about the cluster expansion in statistical mechanics extends the Lov\'asz Local Lemma by weakening the conditions under which its conclusions holds. In this note, we prove an…

组合数学 · 数学 2011-03-15 Wesley Pegden

In this paper, we apply the Clique Lov\'asz Local Lemma to provide sufficient conditions on memory and lifting degree for removing certain harmful combinatorial structures in spatially-coupled (SC) codes that negatively impact decoding…

信息论 · 计算机科学 2025-09-23 Lei Huang

We study the problem of sampling an approximately uniformly random satisfying assignment for atomic constraint satisfaction problems i.e. where each constraint is violated by only one assignment to its variables. Let $p$ denote the maximum…

数据结构与算法 · 计算机科学 2021-02-17 Vishesh Jain , Huy Tuan Pham , Thuy-Duong Vuong

This work studies the planning problem for robotic systems under both quantifiable and unquantifiable uncertainty. The objective is to enable the robotic systems to optimally fulfill high-level tasks specified by Linear Temporal Logic (LTL)…

机器人学 · 计算机科学 2025-02-28 Pian Yu , Yong Li , David Parker , Marta Kwiatkowska

Large language models (LLMs) have achieved state-of-the-art performance in machine translation (MT) and demonstrated the ability to leverage in-context learning through few-shot examples. However, the mechanisms by which LLMs use different…

计算与语言 · 计算机科学 2024-10-22 Emmanouil Zaranis , Nuno M. Guerreiro , André F. T. Martins

The ability of generative large language models (LLMs) to perform in-context learning has given rise to a large body of research into how best to prompt models for various natural language processing tasks. In this paper, we focus on…

计算与语言 · 计算机科学 2024-08-02 Armel Zebaze , Benoît Sagot , Rachel Bawden